bisecting fixing commit since 7cc2a8ea104820dd9e702202621e8fd4d9f6c8cf
building syzkaller on 510951950dc0ee69cfdaf746061d3dbe31b49fd8
testing commit 7cc2a8ea104820dd9e702202621e8fd4d9f6c8cf with gcc (GCC) 8.4.1 20210217
kernel signature: 1a1d2595ef8b42cb606e33e16b65cfdcc5769cddd33209112c5bdb2507607901
run #0: crashed: BUG: soft lockup in smp_call_function
run #1: crashed: BUG: soft lockup in smp_call_function
run #2: crashed: BUG: soft lockup in smp_call_function
run #3: crashed: BUG: soft lockup in smp_call_function
run #4: crashed: BUG: soft lockup in smp_call_function
run #5: crashed: BUG: soft lockup in smp_call_function
run #6: crashed: BUG: soft lockup in smp_call_function
run #7: crashed: BUG: soft lockup in smp_call_function
run #8: crashed: BUG: workqueue lockup
run #9: crashed: BUG: soft lockup in smp_call_function
run #10: crashed: BUG: workqueue lockup
run #11: crashed: BUG: soft lockup in smp_call_function
run #12: crashed: INFO: rcu detected stall in sys_clock_settime
run #13: crashed: INFO: rcu detected stall in sys_clock_nanosleep
run #14: crashed: INFO: rcu detected stall in sys_fallocate
run #15: crashed: BUG: soft lockup in smp_call_function
run #16: crashed: BUG: soft lockup in smp_call_function
run #17: crashed: no output from test machine
run #18: crashed: no output from test machine
run #19: crashed: no output from test machine
testing current HEAD 3cb60ee6323968b694208c4cbd56a7176396e931
testing commit 3cb60ee6323968b694208c4cbd56a7176396e931 with gcc (GCC) 10.2.1 20210217
kernel signature: ed06c07f53b3222ebd15c259972aeb9904449eb292dbad85a267658478709fef
run #0: crashed: BUG: soft lockup in smp_call_function
run #1: crashed: BUG: soft lockup in smp_call_function
run #2: crashed: BUG: workqueue lockup
run #3: crashed: BUG: workqueue lockup
run #4: crashed: BUG: soft lockup in smp_call_function
run #5: crashed: BUG: workqueue lockup
run #6: crashed: INFO: rcu detected stall in do_idle
run #7: crashed: no output from test machine
run #8: crashed: no output from test machine
run #9: crashed: no output from test machine
revisions tested: 2, total time: 29m11.844761042s (build: 12m31.868299414s, test: 16m3.702661251s)
the crash still happens on HEAD
commit msg: Merge tag 'tpmdd-next-v5.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd
crash: no output from test machine